how do you simplify this expression?

Question

(7n-n-8n⁴) + (5n+4n³+5n⁴)

Answer 1

(7n-n-8n⁴)+(5n+4n³+5n⁴)

 

Since all of the operations are addition and subtraction, we can remove the parentheses:

 

7n - n - 8n⁴ + 5n + 4n³ + 5n⁴

 

Now combine like-terms. Like terms have the same variable and exponent.  I'll group the like terms in parentheses so you can see them:

 

(-8n⁴ + 5n⁴) + (4n³) + (7n - n +5n)

 

-3n⁴ + 4n³ + 11n